You can't change the past, but you can ruin the present by worrying about the future.

What is life when you come to think upon it, but a most excellent, accurately set, infinitely complicated machine for turning fat playful puppies into old mangy blind dogs, and proud war horses into skinny nags, and succulent young boys, to whom the world holds great delights and terrors, into old weak men, with running eyes, who drink ground rhino-horn?

It is not the visions but the activity which makes you happy, and the joy and glory of the flier is the flight itself.

What is man, when you come to think upon him, but a minutely set, ingenious machine for turning with infinite artfulness, the red wine of Shiraz into urine?

Here I am, where I am supposed to be.

I arrived at the conviction that we should, more easily and more thoroughly than we now do or ever have done, understand the nature and the laws of the Cosmos if we would from the beginning recognize its originator and upholder as being of the female sex.

Humanity has made a great error in seizing on a certain moment, no more intrinsically notable than any other moment and has called it Birth. The habit of honoring one single instant of the universal process to the disadvantage of other instants has done more, perhaps, than anything to obfuscate the crystal clearness of the fundamental flux.